/* ===================================
   Modern CSS Reset & Base Styles
   =================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, ul, li {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===================================
   CSS Variables
   =================================== */

:root {
  --color-primary: #a82800;
  --color-primary-dark: #882000;
  --color-secondary: #252525;
  --color-text: #252525;
  --color-text-light: #686868;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-border: #e0e0e0;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-serif: Georgia, serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* ===================================
   Typography
   =================================== */

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-top: var(--space-xl);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration-color: currentColor;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-light);
}

/* List Styling - Only for content lists, not navigation */
.content-section ul:not(.nav-menu):not(.dropdown-menu):not(.feature-list):not(.contact-list):not(.footer-links):not(.course-grid):not(.news-grid),
.content-section ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.content-section ul:not(.nav-menu):not(.dropdown-menu):not(.feature-list):not(.contact-list):not(.footer-links):not(.course-grid):not(.news-grid) li,
.content-section ol li {
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.content-section ul:not(.nav-menu):not(.dropdown-menu):not(.feature-list):not(.contact-list):not(.footer-links):not(.course-grid):not(.news-grid) {
  list-style-type: disc;
}

.content-section ol {
  list-style-type: decimal;
}

/* Nested lists */
.content-section ul:not(.nav-menu):not(.dropdown-menu):not(.feature-list) ul,
.content-section ol ul {
  margin-top: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.content-section ul:not(.nav-menu):not(.dropdown-menu):not(.feature-list) ul {
  list-style-type: circle;
}

/* Code blocks */
pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
}

code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
}

pre code {
  background: none;
  padding: 0;
}

/* ===================================
   Layout
   =================================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

main {
  min-height: 60vh;
}

/* ===================================
   Header & Navigation
   =================================== */

.site-header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.site-branding {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-logo {
  max-width: 200px;
  height: auto;
}

.site-title a {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Navigation */
.main-nav {
  display: none;
}

.nav-menu {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.menu-item a {
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text);
  font-weight: 500;
  border-radius: 4px;
  transition: var(--transition);
}

.menu-item a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.menu-item.active > a {
  color: var(--color-primary);
  font-weight: 600;
}

.dropdown-menu a.active {
  color: var(--color-primary);
  font-weight: 600;
  background: var(--color-bg-alt);
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.has-dropdown > a {
  display: block;
  position: relative;
  z-index: 101;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% - 5px);
  left: 0;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  border-radius: var(--border-radius);
  min-width: 220px;
  padding: var(--space-sm) var(--space-xs);
  padding-top: calc(var(--space-sm) + 5px);
  z-index: 100;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  display: block;
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text);
  border-radius: 4px;
}

.dropdown-menu a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 1001;
}

.hamburger {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--color-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .main-nav {
    display: block;
  }

  .menu-toggle {
    display: none;
  }
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    padding: 5rem var(--space-lg) var(--space-lg);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }

  .main-nav.is-open {
    display: block;
    transform: translateX(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .menu-item a {
    display: block;
    padding: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
  }

  .dropdown-menu {
    position: static;
    display: block;
    box-shadow: none;
    background: var(--color-bg-alt);
    margin: 0;
    border-radius: 0;
    padding-left: var(--space-md);
  }

  .has-dropdown > a {
    pointer-events: none;
    color: var(--color-primary);
    font-weight: 600;
  }
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  position: relative;
  padding: var(--space-2xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #e8e8e8 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  filter: grayscale(60%) blur(1px);
  z-index: 0;
}

/* Default background for pages without specific hero image */
.hero::before {
  background-image: url('/images/bologna-bg.jpg');
}

/* Per-page hero backgrounds */
.hero[data-bg="corsi"]::before {
  background-image: url('/images/corsi-individuali.png');
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.08;
  filter: none;
}

.hero[data-bg="siti-web"]::before {
  background-image: url('/images/siti-web.png');
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.08;
  filter: none;
}

.hero[data-bg="aziendali"]::before {
  background-image: url('/images/corsi-aziendali.png');
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.08;
  filter: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.hero .lead {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ===================================
   Services Section
   =================================== */

.services {
  padding: var(--space-2xl) 0;
  background: #fff;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.service-card {
  display: block;
  background: #fff;
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition);
  border: 2px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  border-color: var(--color-primary);
  text-decoration: none;
}

.service-card img {
  margin: 0 auto var(--space-md);
  max-width: 200px;
}

.service-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.5rem;
  color: var(--color-secondary);
}

.service-card:hover h3 {
  color: var(--color-primary);
}

.service-card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ===================================
   Content Sections
   =================================== */

.content-section {
  padding: var(--space-2xl) 0;
}

.content-section.alt-bg {
  background: var(--color-bg-alt);
}

.content-section h2 {
  margin-top: 0;
  margin-bottom: var(--space-lg);
}

.content-section h2:not(:first-child) {
  margin-top: var(--space-2xl);
}

.content-section h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

/* Better spacing for content */
.content-section > .container > *:last-child,
.content-narrow > *:last-child {
  margin-bottom: 0;
}

/* Ensure lists in content have proper styling */
.content-section ul:not(.feature-list):not(.nav-menu):not(.dropdown-menu):not(.contact-list):not(.footer-links),
.content-section ol {
  list-style-position: outside;
  margin-left: 0;
}

.content-section ul:not(.feature-list):not(.nav-menu):not(.dropdown-menu):not(.contact-list):not(.footer-links) li strong,
.content-section ol li strong {
  color: var(--color-secondary);
}

.section-link {
  display: inline-block;
  text-decoration: none;
  color: var(--color-secondary);
  transition: var(--transition);
}

.section-link:hover {
  color: var(--color-primary);
  transform: translateX(5px);
}

.content-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Better paragraph spacing in narrow content */
.content-narrow > p + p {
  margin-top: var(--space-md);
}

.content-narrow > p + h2,
.content-narrow > ul + h2,
.content-narrow > ol + h2 {
  margin-top: var(--space-2xl);
}

.content-narrow > p + h3,
.content-narrow > ul + h3,
.content-narrow > ol + h3 {
  margin-top: var(--space-xl);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}

.feature-list li {
  padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
  position: relative;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

.footnote {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-top: var(--space-lg);
}

/* ===================================
   Footer
   =================================== */

.site-footer {
  background: var(--color-secondary);
  color: #fff;
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-col h4 {
  color: #fff;
  margin-bottom: var(--space-md);
  font-size: 1.125rem;
}

.footer-col p,
.footer-col a {
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
}

.footer-col a:hover {
  color: #fff;
}

.contact-list,
.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 640px) {
  :root {
    --space-xl: 2rem;
    --space-2xl: 2.5rem;
  }

  .hero {
    padding: var(--space-xl) 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
  text-align: center;
}

.mt-0 {
  margin-top: 0 !important;
}

.mb-0 {
  margin-bottom: 0 !important;
}

/* ===================================
   Contact Form Styles
   =================================== */

.contact-form {
  margin-top: var(--space-xl);
}

.form-note {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label:not(.checkbox-label) {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--color-text);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
  width: 100%;
  padding: var(--space-sm);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: var(--transition);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(168, 40, 0, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-group fieldset {
  border: none;
  padding: 0;
}

.form-group legend {
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.checkbox-group {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  background: var(--color-bg-alt);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  font-weight: normal;
}

.checkbox-label:last-child {
  margin-bottom: 0;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-label span {
  flex: 1;
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(168, 40, 0, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ===================================
   Course Grid Styles
   =================================== */

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.course-card {
  padding: var(--space-lg);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.course-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.course-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.course-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.course-card h3 a:hover {
  color: var(--color-primary);
}

.course-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  margin: 0;
}

/* ===================================
   News Grid Styles
   =================================== */

.news-grid {
  display: grid;
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.news-card {
  padding: var(--space-lg);
  background: var(--color-bg);
  border-left: 4px solid var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.news-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateX(4px);
}

.news-card header h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.news-card header h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.news-card header h2 a:hover {
  color: var(--color-primary);
}

.news-meta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.news-meta time {
  font-weight: 500;
}

.news-excerpt p {
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.read-more {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-block;
}

.read-more:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ===================================
   Article Styles
   =================================== */

.article-meta {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.article-footer {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--color-border);
}

.back-link {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.back-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}